Model comparison
Mercury 2.5 vs Mistral Medium 3.1
Mercury 2.5 is the stronger model overall, scoring 33.5 to 31.9 on the Noometry Index.
Last verified . 0 shared benchmarks.
Mistral AISummary
- The widest gap is in reasoning, where Mercury 2.5 leads 22.4 to 10.6.
- Mercury 2.5 is cheaper at $0.04 / $0.15 per million input/output tokens, against $0.40 / $2 for Mistral Medium 3.1.
- Mercury 2.5 accepts more context: 260K tokens versus 131K.
Side by side
| Mercury 2.5 | Mistral Medium 3.1 | |
|---|---|---|
| Provider | Inception | Mistral AI |
| Noometry Index | 33.5 | 31.9 |
| Released | 2026-09-08 | — |
| Weights | Proprietary | Proprietary |
| Context window | 260K | 131K |
| Max output | 66K | 105K |
| Input $ / M tokens | $0.04 | $0.40 |
| Output $ / M tokens | $0.15 | $2 |
| Results tracked | 4 | 3 |
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Category by category
Coding Not comparable
Mercury 2.5: 39.5 (#156), Mistral Medium 3.1: —
Reasoning Mercury 2.5 leads
Mercury 2.5: 22.4 (#193), Mistral Medium 3.1: 10.6 (#341)
| Benchmark | Mercury 2.5 | Mistral Medium 3.1 |
|---|---|---|
| NYT Connections (extended) | — | 6.5% |
| CritPt | 0% | — |
| Thematic Generalization | — | 20.3% |
Math Not comparable
Mercury 2.5: 23.3 (#272), Mistral Medium 3.1: —
| Benchmark | Mercury 2.5 | Mistral Medium 3.1 |
|---|---|---|
| ProofBench | 3% | — |
Writing & Preference Not comparable
Mercury 2.5: —, Mistral Medium 3.1: 55.5 (#145)
| Benchmark | Mercury 2.5 | Mistral Medium 3.1 |
|---|---|---|
| EQ-Bench Creative Writing | — | 1476 |
Frequently asked questions
Is Mercury 2.5 better than Mistral Medium 3.1?
Mercury 2.5 is the stronger model overall, scoring 33.5 to 31.9 on the Noometry Index.
Which is cheaper, Mercury 2.5 or Mistral Medium 3.1?
Mercury 2.5 is cheaper. It lists at $0.04 per million input tokens and $0.15 per million output tokens; Mistral Medium 3.1 lists at $0.40 and $2.
Which has the bigger context window?
Mercury 2.5 does, with 260K tokens against 131K.
How many benchmarks do Mercury 2.5 and Mistral Medium 3.1 share?
0 benchmarks have published results for both models. Mercury 2.5 has 4 scored results on Noometry and Mistral Medium 3.1 has 3.